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Inicio Allergologia et Immunopathologia Effects of icariin on asthma mouse model are associated with regulation of prost...
Journal Information
Vol. 45. Issue 6.
Pages 567-572 (November - December 2017)
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Vol. 45. Issue 6.
Pages 567-572 (November - December 2017)
Original Article
DOI: 10.1016/j.aller.2017.02.007
Effects of icariin on asthma mouse model are associated with regulation of prostaglandin D2 level
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J. Qiao, S. Sun, L. Yuan, J. Wang
Corresponding author
qjou@163.com

Corresponding author.
Department of Respiratory Medicine, The Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Abstract
Background

We aimed to observe the effect of icariin on an asthma mouse model and explore the potential underlying mechanisms.

Methods

The asthma mouse model was established by ovalbumin (OVA) sensitisation and respiratory syncytial virus (RSV) infection and then treated with icariin. Airway resistance was assessed by whole body plethysmograph. In addition, pathological slides were stained with haematoxylin–eosin, and the peribronchial inflammation was observed microscopically. The concentration of prostaglandin D2 (PGD2) in serum and bronchoalveolar lavage fluid (BALF) was detected by enzyme-linked immuno sorbent assay (ELISA). The relative level of prostaglandin D2 receptor 2 (CRTH2) mRNA was assessed by real-time quantitative PCR.

Results

Compared with the icariin-untreated group, there was a significant reduction of Penh in the treated group. Total leucocyte amount and all sorts of leukocytes were lower in the treated group than in the untreated group. HE staining results revealed that a large number of inflammatory cells infiltrated into the peribronchial tissues of untreated group, and the degree of airway inflammation decreased significantly in the treated group. PGD2 in serum and BALF, as well as CRTH2 mRNA level in lung tissues were lower in the treated group than in the untreated group.

Conclusion

Icariin is a promising therapeutic strategy for asthma, and PGD2 might be a new target for asthma therapy in OVA-induced and RSV-infected asthma model.

Keywords:
Ovalbumin
Asthma
PGD2
Icariin
Respiratory syncytial virus

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